Apparatus for cutting and breaking asphalt or concrete



J. PETERMANN. APPARATUS FOR CUTTING AND BREAKING ASPHALT 0R CONCRETE.

APPLICATION FILED NOV. 5, I9I8- Patehted June 22, 1920.

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APPLICATION FILED NOV- 5, 1918 1,344,560. Patented June 22, 1920;

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' 1 Jae 45157229041!!! W' W mflajkm UNITED STATES PATENT OFFICE.

JosEPH PETERMANN, or II-IILADELPHIA, PENNSYLVANIA.

Application filed November 5, 1918.

To all whom it may concern:

Be it known that I, J OSEPH PETERMANN, a citizen of the United States, residing at 249 S. 57th street, Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented new and useful Improvements in Apparatus for Cutting and Breaking Asphalt or Concrete, of which the following is a specification.

The invention relates to mechanism for cutting and breaking asphalt, concrete and other homogeneous substances of similar nature, and has for an object to provide a machine for cracking, breaking up or cutting asphalt, concrete and the like on roads, highways or other places where it is desired to break up the same for purposes of repair or to obtain access to underlying structure.

Among other features, my invention comprehends various improvements over structures set forth in United States Letters Patent #1276586, granted to me on August 20, 1918, and in application for Letters Patent of the United States filed by me on September 14, 1917, Serial No. 191,457.

Still further the invention comprehends particular means for disposing the cutting mechanism in proper association with the wheels or rollers of the usual steam or other operated road roller, in order that the great est. cutting or breaking strength can be obtained, bringing about a result which will enable the operator of the vehicle to which the mechanism is attached, to accomplish the operation in the shortest space of time and in the most efiicient manner.

In the further disclosure of the invention, reference is to be had to the accompanying drawings, constituting a part of this specification, in which similar characters of reference denote corresponding parts in all the views, and in which- Figure 1 is a fragmentary side elevation of the rear part of a steam roller embodying my improvements.

Fig. 2 is a transverse section taken approximately onthe line 22 in Fig. 1, and with the cutting mechanism removed for the sake of clearness.

Fig. 3 is an end elevation of the structure shown in the two preceding figures, with parts broken away or in section to more clearly illustrate the underlying structure, and

Fig. 4- is an enlarged detail of the means used in connection with my present invention for raising or lowering the cutters.

Specification of Letters Patent.

Patented June 22, 1920.

Serial No. 261,254.

I Referring more particularly to the drawings, the numeral 10 indicates a portion of the water tank which is usually located at the rear of the steam roller, and the numeral 11 indicates the coal bins or receptacles which are superposed thereabove. while the numeral 12 designates the rear portion of the boiler plates. Now, according to my present improvements, I bolt or otherwise rigidly secure longitudinally and horizontally of the lower part of the tank 10 a pair of channels 13, and said channels are of such len th as to extend rearwardly beyond the rear wheels 14, indicated by the dot-and-dash lines in Fig. 1, while at the same time they overlap the rear portion of the boiler plates 12, and it is to be noted that said channel irons are disposed with their webs abutting the exterior plates of the tank 10 and boiler plates 12. In order to rigidly support and retain the aforesaid channels 13 in proper alinement, I dispose vertically of the joint 15, between the tank 10 and boiler plates 12, a strap '16, which is bent at its lower part 17 to firmly grip over the channel sections 13, and to which it is further secured and to the joint 15 by bolts 18. A reinforcing piece or pieces 19 is or are inserted between the flanges of the channels 13 where the strap portion overlaps said channels. At or near the rear part of the channels 13 I secure opposedly spaced channels 20, which are .cut or otherwise fashioned L at their inner ends to abut firmly into the said channels 13, and they are secured thereto by angles 21, and additional angles 22 may be secured to the upper flanges and to the tank 10. Blocks 23 are bolted or otherwise secured between the outer ends of the opposed channels 20 and they serve, as will be hereinafter explained, as the outboard bearings for the spaced shafts. Transversely of the tank 10 I secure a pair of tubes 24 which are welded or otherwise secured therein to insure a perfect watertight joint, and these tubes 24 serve as the medial supports for the shafts 25 which are supported therein, and the free ends whereof are housed in the aforesaid blocks 23, as will be clearly understood on reference more particularly to Fig. 2 of the accompanying drawings. In order to further insure a perfeet rigidity for the cutter-carrying framework as hereafter described, I bolt or otherwise secure to the inner lower portion of the tank 10 a U-shaped strap 26, the limbs 27 whereof are upwardly extended inside the tank 10, and said U-shaped strap is preferably disposed midway between the afore said shaft-bearing tubes 24:. Thus it will be seen that said strap keeps the tank plates properly spaced, while at the same time it serves to maintain the entire structure in port the forward ends of the channels 13,

and said straps are bolted to the boiler plates by bolts 30.

It is to be particularly noted that the disposition and arrangement of the straps 1G, 29' is such that the forward ends of the channels 13 are effectively prevented from any lateral movement, inasmuch as the bent part 17 of the strap 16 overlaps the outboard portion ofthe channels 13, while the straps 29' are interposed between the inner web portions and the boiler plates, and are firmly bolted thereto.

Referring more particularly to Figs. 1 and l ofthe drawings, the cutters 31 are revolubly housed in the lower part of vertically movable supporting frames 32, and said frames 32 have revolubly connected to their upper part a pair of vertically disposed threaded spindles 33, one of which is provided with a right-hand threaded portion, and the other with a left-hand threaded portion. Keyed or otherwise secured to the vertical spindles 33 are tooth wheels 34, which are adapted to rotate said spindles in unison, and to this end 1 house the upper end of the spindles 33 in an inverted U- shaped strap or bearings 35, which is bolted or otherwise attached to the upper part of the cuttercarrying framework. One of the spindles 33 is upwardly extended and has applied thereto a ratchet wrench or similar appropriate manipulating lever 36. Thus it will be seen that by manipulating said lever 36 in one direction, the cutters 81 will be raised, while the reverse movement of said ratchet wrench will effect a reverse movement, or lowering of the cutters.

From the foregoing description it will be readily seen that by my present improve- -I11el1i S, I provide an exceedingly effective and strong support for the cutting mechanism, as well as an easy and eflicient means for manipulating the same, and I wish it to be understood that while I have described one specific embodiment of my invention in detail, I do not confine myself rigidly thereto, as it is obvious that slight changes may be made in the particular arrangement and combination of the several parts, without departing from the nature and essential features of my said invention. For instance, 1 do not limit myself to the employment of channel and angle irons, but consider myself at liberty to employ other suitable sections to adapt my improvement to particular working conditions.

' I claim: 7 I

1. In an apparatus for cutting and breaking asphalt or concrete, the combination with a road roller, the boiler and water reservoir thereof, of a housing mounted on each side of the water reservoir, said housin comprising channel and strap-like supporting members secured to the sides of the water reservoir, a cutter mechanism in each housing, spaced shafts passing through said cutter mechanism, said shafts passing through the water reservoir and projecting from both sides thereof, and tubular bearings for said shafts and encircling medial portions thereof, said tubular bearings tra ersing the water reservoir and isolating said shafts from the contents of the former.

2. In an apparatus for cutting and breaking asphalt or conerete,the combination with a road roller, the boiler and water reservoir thereof, of a housing mounted on each side of the water reservoir, said housing com-- prising channel and strap-like supporting members secured to the sides of the water reservoir, a cutter mechanism in each housing, spaced shafts passing through said outter-raising and lowering mechanism, said shafts passing through the water reservoir and projecting from both sides thereof, tubular bearings for said shafts and encircling medial pertionsthereof, said tubular bearings traversing the water reservoir and isolating said shafts from the contents of the former, and supporting and bracing members forsaid housing and the cooperating elements thereof, the supporting and bracing members being secured to the sides of the water reservoir and boiler at their points of abutment.

3. In an apparatus for cutting and breaking asphalt or concrete, the combination with a road roller, the boiler and water reservoir thereof, of a-housing mounted on each side of the water reservoir, said hous ing comprising channel and strap-like supporting members secured to the sides of the water reservoir, cutter mechanism disposed in each housing, shafts for said cutter mechanisms, said shafts being supported at their medial portions by tubular bearings passing through the water reservoir and being rigidly supported at their outboard ends in the side walls of the aforesaid housings.

In testimony where I affix my signature.

JOSEPH PETERMANN. 

